Eisenhuth Gmbh & Co. Kg

Technische Universitaet Clausthal

Awama Gmbh

Cnp—technology Water and Biosolids Gmbh

P.c.s. Pollution Control Services Gmbh

Clausthaler Umwelttechnikinstitut Gmbh (cutec-institute)

Technische Universität Clausthal

P.c.s. Pollution Control Service Gmbh

Michael Sievers

Hinnerk Bormann

Wolfgang Ewert

Ulrich Kunz

Thorsten Hickmann

Rene Schumann

Christian Schroeder

Dennis Haupt

Rouven Henkel

Thorben Muddemann

The invention relates to a method and an arrangement for wastewater treatment, in which at least portions of the sewage sludge contained in the wastewater () are subjected to a hydrolysis (). The hydrolysis () is carried out as a thermal hydrolysis. After the hydrolysis step (), a drying process is () carried out. The drying process () is a process operating with positive pressure in the steam region. At least parts of the steam resulting from the drying process (), which operates with positive pressure, are fed () to the portions of the sewage sludge in the thermal hydrolysis ().

Method and arrangement for wastewater treatment

For bio-electrically generating electric power from organic ingredients of a waste water flowing in a flow direction, an anode is immersed in the waste water in a first spatial area, and oxygen is supplied to a cathode which is electrically connected to the anode and arranged in a second spatial area delimited from the first spatial area by means of a proton-permeable membrane. A voltage between the anode and the cathode is increased by a DC/DC converter located at the anode and the cathode, and a further voltage between a further anode in said or a further first spatial area and a further cathode in said or a further second spatial area is increased by a further DC/DC converter located at the further anode and the further cathode. A DC voltage link is charged with the DC/DC converter and the further DC/DC converter connected in parallel to the DC voltage link.

Method and apparatus for bio-electrically generating power from organic ingredients of a waste water

The invention describes a method for treating sewage sludge through the treatment steps of hydrolyzing () the sewage sludge () and digesting () the hydrolyzed sewage sludge (), which has undergone hydrolysis (), for the anaerobic treatment of the sewage sludge (), and through the step of separating phosphate from the at least partially treated sewage sludge (). Phosphate is separated after the treatment step of hydrolyzing () and before the treatment step of digesting () the hydrolyzed sewage sludge (), wherein the sewage sludge (), without the phosphate portion separated in the phosphate separation step, is fed to the anaerobic treatment performed through digestion ().

Method for treating sewage sludge and wastewater treatment plant

The invention relates to a method for wastewater treatment utilizing an anaerobic treatment of primary sludge (PS) in a septic tank (), and a separate treatment of excess sludge (&#xdc;S). The excess sludge (&#xdc;S) is separated from the primary sludge (PS) before the anaerobic treatment, solubilized in a hydrolysis treatment and liquefied, and subjected to a separate anaerobic treatment independently of the primary sludge (PS).

Method for wastewater treatment and wastewater treatment system

A flocculation apparatus and method for treating colloidal suspensions. The apparatus includes a suspension inlet, a suspension outlet and an inner cone mounted centrally in a conical outer housing. The inner cone and/or the outer housing is rotatable relative to one another and a gap for through-flow of suspensions is present between the inner cone and the outer housing. In the method, continuously measuring a flock size distribution of a suspension stream passed into the flocculation apparatus is provided. Additionally provided is axially displacing the inner cone and/or outer housing as a function of the flock size distribution and the suspension volume flow rate.

Flocculation apparatus for treating colloidal suspensions

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Clausthal-Zellerfeld, Germany

Michael Sievers